Printing-machine.



E. BAKE.

PRNUNG MACHXNE.- y APPLxcmmx man mw s. 191e.

Patente@ June l2, i 'i A TTUHNEYS E. KE.

PRINTING IIII/ICHIIIE.`

APPLICATION HLED JULY 3,1916.

Patented'lune 12, 19V?.

5 SHEETS-SHEET 2.

m m n A IIIIIIIIIIIIIIIII i Wl TNESSES:

I?. DAKE.

PRINTING MACHINE.

APPLICATION FILED IuLv 3. I9I6.

.Patented June 12, 1917..

5 SHEETS-SHEET 3.

(MV 52W Arm/mers MIJ E. DAKE.

PRlNTiNG MAcHmE.

APPLICATION FILED JULY 3,1916. 1,229,896.

Patented June 12, 1917.

5 SHEETS-SHEET 4.

E. DAKE.

PRINTING MACHINE. APPLlcATloN FILED Jun/3,1916.

1,229,896. Patented June 12, 1917.

5 SHEETS-SHEET 5.

TTORNE V8 UNITED STATES PATENT OFFICE.

EDWARD DAKE, F MEDFORD, WISCONSIN.

PRINTING-IMAGEN E.

' Medford, in the county of Taylor and State of Visconsin, have invented new and useful Improvements in Printing-Machines, of which the following is a specification.

My invention is an improvement in printing machines, and has for its object to provide a machine of the character specified,

adapted for the printing of photographic prints from negatives, wherein a closed cabinet is provided having an opening inl its top covered by a sheet of plate glass, and encircled by a frame having guides r gages to assist in positioning the prints, and wherein a supporting frame for the lighting mechanism is provided, suspended in the y cabinet below the opening, and supporting a series of lighting devices, and a second frame is arranged to be adjusted vertically between the lightsupporting frame and the glass, and wherein a non-actinic or ruby lighting device is arranged between the said last named frame and the printing glass, and wherein a platen is provided mounted to move toward and from the printing glass, together with means for operating the same, and a switch controlled by the movement of the platen for alternately connecting first named lighting devices and the last named device with an electrical circuit, and wherein independent means is provided for cutting either of the irst named devices into or out of the circuit, independently oi2 the others. i

In the drawings:

Figure 1 is a perspective view of the iniproved `machine with the platen raised,

Fig. 2 is a top plan view.

V,Eig 3 is a section on the line 3 3 ci Fig. 2.

Fig. 4 is a section on the line i-d ci Fig. 3 looking in the direction of the arrows adjacent to the line.,

Fig. 5 is a partial perspective view of the platen operating mechanism.

Fig. 6 is a similar View of the dodging plate supporting frame, and

Fig. 7 is a diagralnmatic view showing the lighting circuits.

The present embodiment of the invention comprises a cabinet 1 having supporting tags 2, and provided in its top with an ""3 opening 3, having arranged therein a sheet of transparent material, the sheet being Patented June 12, 191 '7.

Application led .T uly 3, 1916. "Serial No. 107,369. I

of plate glass in the present instance. V.As shown, the opening 3 has its edges rabbeted and the sheet is mounted on the shoulder formed by the rabbet, and a rectangular frame 5 is arranged at the edge of the sheet. Extension leaves 6 are hinged to the ends of the top of the cabinet to fold into the plane of the said top or to depend at the ends of the cabinet as shown in Fig. 1, and a door 7 is provided at the front of the cabinet for permitting access to the interior thereof. This door 7 is hinged to the cabinet as shown, and. has a knob for convenience in opening and closing the same. Guides 8 are arranged at the opposite ends of the opening 3, the said guides being formed of plates which are secured by one edge to the top of the cabinet in spaced relation, and gages 9 and 9El inthe form of metallic strips have their ends engaging with the guides,

the bodies of the strips extending longitudinally of the opening 3.

The gage 9 has a slide 10 mounted thereon, for engagement by the sheet 11 oi paper to be printed. 1n order to position the sheet on the glass, one edge of the sheet 11 is placed against the gage strip, and the end of the strip being placed against theslide, the slide and the gage will properly position the sheet. A platen 12 is provided for cooperating with the sheet of glass, and the said platen is mounted at one end or" a curved arm 13, the platen having azbearing bracket 14 which is connected to the end of the arm. rThe opposite end or" the arm is pivoted between lugs on a bearing bracket 15 secured to the rear side wall et the cabinet, and at the said end the arm 13 ,has an angular lug 16.

A. pair of toggle levers 17 and 1?@- is arranged between the lug 16 and a bearing bracket 18, secured to a plate 19, which connects the rear pair of legs, the remote ends of the levers "1W-17 being pivoted to the lug 16 and to the bearing bracket, as shown more particularly in lFig. 3. The lever 17a or the toggle, has an an ular lug 20, to which is connected one en` or a coil spring 21, the other end of the spring being connected to the cross bar 22 connecting rear legs below the plate 19.

A treadle or pedal'Q?) is hinged to the cross bar 22, and a rod 24 connects the treadle with one end of a lever 25, which is pivoted the other end to a bearing nraclret 26 on the bottoni of the cabinet.

the

v tangular form, y edge an 1 and 3,

That end of the lever 25 to ,which the rod 24 is connected, curves downwardly as shown in Figs.A 3 and 5, and the said end of the lever-is received between the arms of a fork on one yend of a link 27, and the arms are pivoted to posite end of the link is also forked, and the arms of thepfork are pivoted to the toggle levers 17-17a at the joint. The rod 24 is preferably made sectional, as shown 1n Fig. 3, and the sections are connected by a turn-buckle 28, in order that the length of the rod may be adjusted to cause the platen 12 to properly engage the upper face of the sheet 4, of glass.

The coil spring 21 normally holds` the parts with the platen in the position of Figs. that is, with the platen lifted, and with the toggle levers 17--17a in the full line position of Fig. 3. When, however, the

-free end of the treadle 23 is depressedpto make downward traction on the rod 24, the parts will be moved into the dotted line position of Fig. 3, and the platen 12 forced down' tightly upon the upper face of the sheet of glass, as shown. When the treadle is depressed as above mentioned,`the toggle which normally stands in bent position,

is straightened, and a very powerful pres-V sure may be exerted upon the platen. The operative face of the platen is faced with a layer 29 of felt and preferably the platen is of laminated structure.

Mechanism is provided for illuminating 'the cabinet, and the said mechanism is supported in a frame 30 of substantially recthe frame having atitslower angular internal rib 31 which supports a sheet 32 of ground or opal glass, and the frame is suspended fromvthe top of the cabinet, by means of flexible members 33. These members are connected at one end to eyes on the top, and at the other to eyes on the frame. A number of incandescent ybulbs 34 are connected with the frame, the sockets of the bulbs being secured to the inner face of the frame members and the bulbs ex tend inwardly toward each other, as shown. In the present instance eight bulbs are provided, preferably of the 40 watt Mazda type, and these bulbs are divided into three series namely, two series of three each at the ends of the frame, and one series of two extending transversely of the frame at the center thereof. These eight bulbs constitute the lighting'device for supplying white 7 light forprin'ting, and another lighting device is provided for supplying ruby or nonactinic light. This last named device is in the form of a colored bulb 35 and the socket ofthe bulb is connected with the top of the cabinet, as shown in Fig. 3.

The supply of electrical current to theI several lighting devices, is controlled by a switch, which in turn is controlled by the the lever as shown. The opmovement of the platen. The said switch.

is arranged within a casing 36 on the rear wall of the cabinet, and within the casing a switch arm 37 is pivoted, the outer end of the arm extending through the slot in the casing, and the said outer end is connected to the lug 16 of the arm 13 by a sectional rod 38, whose sections are connected by a. turn-buckle 39 to permit the effective length of the rod to be varied. The supply wires 40 for the electric current, pass from the usual plug to the switch, entering at the top thereof, as shown, and one of the wires'is connected with the switch lever or arm 37.

Referring to Figs. 3 and 7, it will be seen that the switch arm 37 vis adapted to contact with contact members 41 above the same, and with contact members 42 below vthe same, the said members being arranged within the casing 36. The contact members 41 are connected with the ruby light 35, and the contact members 42 are connected with the white lights 34, the arrangement being such that when the platen is in the full line position of Fig. 3, the ruby light will be in circuit and the' white lights will be out of circuit, while when the platen is in the dotted line position of Fig. 3, the white lights will be in circuit and the ruby light will be out of circuit.

As shown in Fig. 7, a lead wire 43 leads from the`contact members 42 to the ruby light 35, and the return wire 44 is connected with the negative wire of the circuit 40. A lead wire 45 leads from the contact' members 41 to the white lights 34, and this lead wire 45 as shown, is branched, branches 45 and 45b leading from the said lead wire to the two series of three each. The return wires 46"L and 46b from the said two series are branched onto the return wire 46 from the series of two, and this wire 46 is connected to the negative wire of the circuit 40.

A cut-out switch 47 vis interposed in the wires 45 and 46, for permitting the three series of white lights to be cut out of and into the circuit, and switches 48, 48 and 48b are interposed in the lead wires 45 and 46 beyond the branches 45, 46, 45",y 46", and in the branches 45-46 and 45"-46h respectively. By means of the switch 47, all the white lights may be cut out of the circuit. By means of the switch 48 the series of two lights may be cut out of the circuit, while by means of the switch 48 or 48", the corresponding series of three may be cut out of the circuit.' The switch`l 48 is varranged beneaththe cabinet ,adjacent to thetwo lights 34, and theswitches 48a and 48b are arranged on the front of the cabinet adjacent to the lights which they control. The switch 47 is arranged on the top of the cabinet, near one v and when all of the branches 48, 48a and 48h are turned in the properdirection, all of the bulbs 34 will be in condition to be connected with the lighting circuit by the movement of the platen, when the switch -47 is turned in the proper direction. As the platen operates, the lighting circuit will be alternately connected with the ruby light and with the white lights.

A supporting frame 49 of rectangular form is mounted between the frame 30 and the opening 3, and within said frame is arranged a sheet 50 of ground glass. This frame is supported by means of cords 52, which are connected at one end to the frame at the corners thereof, and extend upwardly through screw eyes 53 held in the under side.

' of the top of the cabinet. These cords pass from the eyes 53 to wind upon a drum 54 secured to the lower end of a shaft 55, which is journaled in the cabinet top, and` is provided with a knurled head 56 for conven-v ience in turning the same. The ends of the cords are secured to the drum, and it will be evident that when` the drum is turned, the frame as a whole, will be raised or lowered. The downward movement of the frame 49 is limited by means ofangular lugs 57 on the lower ends of rods 58 depending from the cabinet top at the ends of the said frame.. This frame is adapted to support Vig-netting cards, cut-outs orthe like, and the frame has a range of about four inches, thus enabling the operator to obtain any desired degree of shading by diffusion. All of the elements 34 and 35 extend horizontally, as shown, and the ground glass 32 beneath the lights 34 eliminates all filament shadow. y

The interior of the cabinet, as well as the light .supporting frame 20 is preferably painted a flat white. The hinged leaves at the end when raised, permit the operator to handle any desired amount of paper and negatives. The ruby light 35 is placed in the right hand corner of the cabinet, that is,

to the operators right as he stands at the front of the cabinet, and since this light is near the top of the cabinet, there is no dark spot in the illumination, as would be the case were it placed among the white lights 34.

It will be understood that in use a series of card-board forms are provided for fitting theprinting plate 4 for negatives of different sizes. A plate spring 59 is arranged at the rear of the cabinet beneath the curved ar1fn13, the said spring being arranged to counter-balance the arm and the platen to insure a quick smooth start of the arm when the treadle is depressed, and to cushion the 60 return.

5 are arranged to insure the proper placing of ,connects the white lights required for circuit, by means of the switches 48, 48, 48b and 47, and the machine is ready for operation. When the'platen is in the position of Fig. 3, the white lights will be extinguished, and the ruby light will be ignited. After the printing paper 1l has been positioned on the plate 4, the operator depresses the pedal, and the platen is swung in the -dotted line position of Fig. 3. At the moment that the platen contacts lirmly with the printing plate, the switch arm 37 engages the contact members 4l, igniting the white lights 34. The red light 35 has meanwhile been extinguished, and the negative and print are exposed a proper length of time to secure a` the arrangement of the light supporting yoke provides economy and safety to the bulbs. The pressure of the pedal operates the entire machine, leaving the handsfree to place and remove printed sheets.

By mounting the incandescent bulbs in the frame, and suspending the same Within the cabinet, the frame may be easily removed, to permit access to the bulbs, and to permit the easy removal and replacement of the same.

I claim:

l. A printing machine comprisingl a cabinet having a printing opening in itstop and a sheet of glass held in the opening, a frameinclosing the sheet and having guides at its end, gage strips engaging the guides at their ends and movablertransversely of the glass printing plate, a frame arranged below the printing plate and having a sheet of ground glass, means on plying white light, an electrically controlled illummating device near the top of the cabinet for supplying red light, a platen mounted tc swing toward and from the printing plate, means for moving the platen, a switch for controlling the supply of current to the illuminating devices, and means operated by the movement of the platen for operating the switch to alternately connect the illuminating devices in circuit.

2. A printing machine comprising a cabinet having an opening in its top and a plate of glass closing the opening, a platen mounted to move toward and from the plate, an

open frame below the opening, a sheet ofu net having an opening in its top, a plate of glass closing the opening, a platen mounted to move toward the plate, means for moving. the platen, said moving means comprising a curved arm pivoted at one end to the rear of the cabinet and connected at the other end to the platen, and having an angular lug at the first named end, a toggle lever arranged between the lug and the cabinet, a spring normally holding the toggle in broken condition, and means connected with the joint of the toggle for straightening the same.

4. A printing device comprising a cabinet having an opening in its top, a plate of.

glass closing the opening, a platen mounted to move toward the plate, means for' moving the platen toward the plate, a spring for returning the platen, a frame supporting a sheet of translucent material below the opening, means for raising and lowering the frame, and lighting means suspended below the frame.

5. A printing machine comprising a cabinet having a printing opening in its top and a sheet of glass held in the opening, an electrically controlled illuminating device below the frame for supplying white light, an electrically controlled illuminatingv device near the top ofthe cabinet for supplying red light, a platen' mounted to swing toward and from the printing plate, means for moving the platen, a switch for controlling the supply of current to the illuminating devices, and means operated by the .movement of the platen for operating the Switch to alternately connect the illuminating devices in circuit.

6. A printing device comprising a cabinet having an opening in its top, a plate of glass closing the opening, a platen mounted to move toward and from the plate, a frame supporting a sheetof translucent material below ythe opening, means for raising and lowering the frame, and lighting means below the frame.

7. A printing machine comprising a cabinet having an opening in its top and a plate of glass covering -the opening, a platen mounted to move toward and from the plate,

an illuminating device within the cabinet,

a sheet of translucent material below the opening and between the illuminating device and the opening, and means for raising and lowering the frame.

EDWARD DAKE. Witnesses:

E. L. URQUHART, L. B. SCIEIURrrE.` 

